Every company would have their own strategy in regard to intellectual property, but of course all of them are very interested in protecting the rights to that property for as long as they can. In fact, we advocated on behalf of an extension of copyright protection like the music industry received. I do believe that we would get that under the TPP, if the TPP is ever ratified.
In short, every company sets their own arrangements contractually with investors. Keep in mind that a lot of the very big companies that have global IP are the ones that wouldn't need an angel investment anyway, right? It would be the smaller companies, on a smaller scale.